Spring is a widely used Java framework that provides a comprehensive set of features for building applications and systems. Spring is particularly well-suited for building web applications and provides features such as dependency injection, data access, and web MVC.
Hibernate is a popular object-relational mapping (ORM) framework that makes it easier to work with databases in Java. Hibernate allows you to map Java objects to database tables and provides features such as caching, lazy loading, and transaction management.
3. Apache Commons
The Apache Commons project is a collection of widely used libraries for Java that provide a variety of utility functions and features. The Apache Commons libraries include libraries for tasks such as data manipulation, file handling, and mathematics.
4. Apache log4j
log4j is a popular logging library for Java that allows you to easily log messages and errors in your applications. log4j is highly configurable and can be used to send logs to various destinations, such as files, databases, and the console.
5. Google Guava
Google Guava is a collection of libraries for Java that provides a wide range of utility functions and features. Google Guava includes libraries for tasks such as data manipulation, caching, and concurrency.
6. Apache Spark
Apache Spark is a fast, in-memory data processing engine for large-scale data processing. Spark is well-suited for tasks such as batch processing, stream processing, and machine learning.
7. Apache Tomcat
Apache Tomcat is a widely used web server and servlet container that allows you to run Java web applications. Tomcat is lightweight and easy to use, making it a popular choice for developing and deploying Java web applications.
Mockito is a popular testing library for Java that allows you to create mock objects for use in unit tests. Mockito makes it easy to write tests that are isolated from the rest of your code, allowing you to test individual components in isolation.
9. Apache Maven
Apache Maven is a build automation tool for Java projects. Maven allows you to manage dependencies, build, test, and package your applications, and is widely used in the Java ecosystem.
JUnit is a widely used testing framework for Java that allows you to easily write and run unit tests for your code. JUnit is simple to use and integrates well with other tools and frameworks.
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